The town emblem was adopted on Dec 7th 1983 but there is no flag law.
The white flag has a green town emblem in the center.
The town emblem is a stylized hiragana か Ka of Kasuya in a form of a flying bird. The circle symbolizes the vivid garden town and the town people’s concord and friendship and the center cotyledon does a growing seed in a society to the future and a wish for an upbringing of the young people. As a whole, it represents an image of the unlimitedly exponential town.
Nozomi Kariyasu, 07 December 2014